SnO_2纳米粒子的制备与表面改性

Preparation and Surface Modification of Nano-SnO_2

以SnCl4·5H2O和氨水为原料,用水热法制备了粒度均匀的SnO2纳米粒子,并用γ-氨丙基三乙氧基硅烷(KH-550)对其进行了表面改性。用X射线衍射(XRD)、透射电子显微镜(TEM)、纳米粒度/Zeta电位测定和元素分析测试技术对粒子进行了表征。研究结果表明,所制得的SnO2纳米粒子为四方晶系金红石型结构,改性后的纳米粒子均一性进一步提高,粒径分布在8～20 nm,能形成稳定的分散体系。

SnO2 nanoparticles have been successfully prepared from SnCl4 and NH3 · H2O aqueous solution by hydrothermal method, and modified with y-aminopropyl triethoxysilane （KH-550）. The product was characterized with X-ray powder diffraction（ XRD）, transmission electron microscopy（ TEM）, nano-size/Zeta potential analyzer and elemental analysis. The results show that SnO2 nanoparticles are all tetragonal-rutile SnO2, the homogeneity of the modified SnO2 nanoparticles was improved with a narrow grain size distribution of 8 -20 nm, and the particles can be dispersed stably in the system.